what do you think about so called "battery savers" for android like "Battery Doctor"

[Pawelk198604]

I don't like it, i i like it in past but now it's crash to often, the previous versions ware better.

[Technical Ben]

Not sure which one your talking about. The in built one for Android is good enough for me. I select low screen use when I'm inside and it's easy to see, and low CPU use when I'm not doing anything taxing with it. It can give a good extra hour or two or more throughout the day like that. I of cause turn it back to normal when gaming or playing video etc.

[Nibb31]

On a stock phone, they are useless.

[andrewas]

Snake oil. Modern versions of android have power management features that do work - they will restrict what apps can be run, manage background activity, shut down the vibration, underclock the CPU/GPU, dim the backlight and so on. By default, these cause your smartphone to gradually degrade to a much more basic phone as its battery dies, allowing you to send texts and make calls long after normal use would have killed the battery. I believe they can be configured to be more or less aggressive, so if you expected to be away from civilization for a while, you could get the most out of your battery.

Apps like battery doctor, though, don't have the ability to change the way the OS handles apps, they just kill any tasks they don't like. Its possible for them to get into a loop, shutting down a battery hungry app which the OS immediately re-starts, using more battery power than if you just left it alone. And they have to be rooted for some features to work at all.

[Dkmdlb]

They used to maybe be useful, but haven't since probably around android 2.2 Better not to install them.

[Pawelk198604]

Snake oil. Modern versions of android have power management features that do work - they will restrict what apps can be run, manage background activity, shut down the vibration, underclock the CPU/GPU, dim the backlight and so on. By default, these cause your smartphone to gradually degrade to a much more basic phone as its battery dies, allowing you to send texts and make calls long after normal use would have killed the battery. I believe they can be configured to be more or less aggressive, so if you expected to be away from civilization for a while, you could get the most out of your battery.

Apps like battery doctor, though, don't have the ability to change the way the OS handles apps, they just kill any tasks they don't like. Its possible for them to get into a loop, shutting down a battery hungry app which the OS immediately re-starts, using more battery power than if you just left it alone. And they have to be rooted for some features to work at all.

rooted?

PS i use Samsung Galaxy S3

[Dkmdlb]

Rooting is the process of allowing users of smartphones, tablets and other devices running the Android mobile operating system to attain privileged control (known as "root access") within Android's sub-system.

Rooting is often performed with the goal of overcoming limitations that carriers and hardware manufacturers put on some devices. Thus, rooting gives the ability (or permission) to alter or replace system applications and settings, run specialized apps that require administrator-level permissions, or perform other operations that are otherwise inaccessible to a normal Android user. On Android, rooting can also facilitate the complete removal and replacement of the device's operating system, usually with a more recent release of its current operating system.

[Aghanim]

So is there any good battery saver for custom ROM?

[andrewas]

Maybe, but it'll be part of the ROM, not a separate app. Cyanogen has one, I don't know about the others.

[Albert VDS]

The best way to get the most time out of your battery is what Technical Ben mentioned.

An other helpful thing to do is closing apps after you use them.

There are a lot of apps that think they are important and need to be run all the time, which of course drains your battery life.

You could also set the apps to not run in the background.

[Dkmdlb]

An other helpful thing to do is closing apps after you use them.

This isn't good advice without some major caveats. On modern versions of android, there's no reason to close apps unless they are specifically doing things like requesting wakelocks.

Go to Settings>Device>Battery, and somewhere in there you will be able to see what is using your battery. Most of the use should come from the screen and android system. If you have any misbehaving apps that seem to be using a lot of battery without your permission, it's better to delete and reinstall than to constantly be fighting them. If they persist, delete permanently. Unless, of course, battery life is less important than that app.

[GoSlash27]

I'm too old-school to bother with "battery management".

Here's my solution:

Having a big battery means I can charge my phone whenever I get around to it.

Best,

-Slashy

[Pawelk198604]

What do you think about my PoweBank

Now i not use it because i have flu

But it's good especially if someone often forgot to recharge.

[Technical Ben]

The best way to get the most time out of your battery is what Technical Ben mentioned.

An other helpful thing to do is closing apps after you use them.

There are a lot of apps that think they are important and need to be run all the time, which of course drains your battery life.

You could also set the apps to not run in the background.

If it's a background working app (usually shows in notifications). If it's an app that "sleeps" when you go to the home page, it saves battery to leave it "open" (actually "suspended") as it will stay in the part of the memory on the phone that uses less power but is quicker to load when you go back (and Android manages this automatically).

If you go to "battery use" in settings it will tell you which programs are using a lot of power, and you can change their settings, close or uninstall these if you don't want them (don't uninstall the needed apps! ).

[cantab]

Big impacts on battery use:

The screen. When indoors I use minimum brightness, I don't like having my retina seared.

Apps that run on a schedule. Eg email checking every five minutes.

Use, of course.

I've gone as long as four days between charges on my Moto G.

[Nuke]

i "upgraded" my ipod video's (5th gen) firmware to rockbox many years ago, to this day i credit its battery longevity to the fact that apple's battery management code has been replaced by something cobbled together by hackers.